> Now, I want to copy customRows into supplier. I created the following 
> code to do this:
> 
> <xsl:stylesheet version="1.0"
>     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>     xmlns:sup="http://www.calypso.net.au/apps/supub/SupplierV1.0">
>   <xsl:template match="files">
>      <xsl:apply-templates select="sup:supplier"/>
>   </xsl:template> 
> 
>   <xsl:template match="sup:supplier">
>     <supplier>
>       <xsl:apply-templates select="@*|node()"/>
>       <supplementary>
>       <xsl:apply-templates select="../customRows"/>
>       </supplementary>
>     </supplier>
>   </xsl:template>
> 
>   <xsl:template match="@*|node()">
>     <xsl:copy>
>       <xsl:apply-templates select="@*|node()"/>
>     </xsl:copy>
>   </xsl:template>
> </xsl:stylesheet>
> 
> Works fine, except it copies namespace information to children nodes 
> that doesn't seem to exists. eg:
> 
> <supplier 
> xmlns:sup="http://www.calypso.net.au/apps/supub/SupplierV1.0">

This namespace is being added because of the rule that literal result
elements copy all the in-scope namespaces from the stylesheet. You can
prevent this using exclude-result-prefixes="sup" on the xsl:stylesheet
element.

>     <priority 
> xmlns="http://www.calypso.net.au/apps/supub/SupplierV1.0" 
> xmlns:dir="http://apache.org/cocoon/directory/2.0" 
> xmlns:cinclude="http://apache.org/cocoon/include/1.0" 
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">1</priority>

> 
> I have checked, these elements are not in the source document, and it 
> only seems to affect the children of supplier. 

You haven't shown the source document but I strongly suspect that priority
is an element in the source document and that these are its in-scope
namespaces.

In XSLT 2.0 you can copy an element without copying its in-scope namespaces
using <xsl:copy copy-namespaces="no">. In 1.0, you can't: you have to
reconstruct the element using <xsl:element>.

Michael Kay
http://www.saxonica.com/